Chrysanthemum plant named ‘Zanmumadore Yellow’

ABSTRACT

A  chrysanthemum  plant named ‘Zanmumadore Yellow’ characterized by its medium sized blooms with yellow ray florets and dark centers and prolific branching; natural season flowering date October 2 (week 41); blooming for a period of 5 weeks.

Botanical designation: Chrysanthemum x morifolium Ramat.

Cultivar denomination: ‘Zanmumadore Yellow’.

RELATED CULTIVARS

The new plant is a flower color mutant of ‘Zanmumadore’ (unpatented)

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of chrysanthemum plant, botanically known as Chrysanthemum x morifolium Ramat, commercially known as a garden mum, and hereinafter referred to by the cultivar denomination ‘Zanmumadore Yellow’. ‘Zanmumadore Yellow’ is a product of a breeding and selection program which had the objective of finding flower color mutants from existing parent plants. The new plant comprises a whole plant mutant of the parent chrysanthemum named ‘Zanmumadore’ (unpatented). Plants from the new cultivar ‘Zanmumadore Yellow’ differ from plants of the parent in the color of the ray-florets. The ray-florets of the parent are pink, while those of the new plant are yellow.

In order to obtain color mutants, unrooted cuttings of the parent plant were irradiated in April 2014 at Ziekenhuis, Rotterdam, the Netherlands, with gamma radiation at a dose of 15Gy. These treated cuttings were then planted in a controlled environment (greenhouse) in Rijsenhout, the Netherlands. In this population of planted cuttings, the new cultivar was discovered as a natural flower color mutant in October 2014 by Sjoukje Heimovaara. The first act of asexual reproduction of ‘Zanmumadore Yellow’ was accomplished when after planting of the ‘Zanmumadore Yellow’ as a motherplant in December 2014, vegetative cuttings from this ‘Zanmumadore Yellow’ were taken and propagated further in Rijsenhout, the Netherlands. In summer, about 6-8 days are needed to initiate roots in cuttings of the new cultivar, after another 5 days rooted plants are formed. The new cultivar has been found to retain its distinctive characteristics through successive asexual propagations.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention of a new and distinct variety of chrysanthemum (of about 22 weeks) is shown in the accompanying drawings, the color being as nearly true as possible with color photographs of this type.

FIG. 1 shows a plant of the cultivar in full bloom.

FIG. 2 shows the various stages of blooms of the new cultivar.

FIG. 3 shows the various stages of foliage of the new cultivar.

DESCRIPTION OF THE INVENTION

The observations and measurements were gathered from plants in the period of 19 to 25 weeks of age grown outdoors in Rijsenhout, the Netherlands, under natural day length and temperature and planted in week 22 in 2017. The natural blooming date of this crop was October 2 (week 41). The average height of the plants was 25-30 cm. No growth retardants were used. No tests were done on disease or insects resistance or susceptibility. No tests were done on cold or drought resistance. This new variety produces medium sized blooms with yellow ray florets and a dark center blooming for a period of five weeks.

From the cultivars known to the inventor the most similar existing cultivars in comparison to ‘Zanmumadore Yellow’ is its parent ‘Zanmumadore’ and ‘Zanmumadore Orange’. When ‘Zanmumadore’, ‘Zanmumadore Yellow’ and ‘Zanmumadore Orange’ are being compared the following differences are noticed: ray floret color in ‘Zanmumadore’ is pink, yellow in ‘Zanmumadore Yellow’ and bronze in ‘Zanmumadore Orange’.

The following is a description of the plant and characteristics that distinguish ‘Zanmumadore Yellow’ as a new and distinct variety.

The color designations are taken from the plant itself. Accordingly, any discrepancies between the color designations and the colors depicted in the photographs are due to photographic tolerances. The color chart used in this description is: The Royal Horticultural Society Colour chart, sixth edition, 2015.

TABLE 1 Botanical Description of Chrysanthemum × morifolium Ramat. ‘Zanmumadore Yellow’ Bud Size: Small; cross-section 5 mm, height 4 mm Shape: Round Texture: Pubescent Outside color: Greyed-green 191A Phyllaries Number: 24, arranged in 3 rows Shape: Elliptic Apex: Acute Base: Truncate Margin: Entire Color: Upper side: Green 139A Lower side: Green N138C Length and width: 0.6-0.8 mm; 2-4 mm Texture: Pubescent Inflorescences Type: Double Height: 13 cm Diameter: 3.5-4 cm Peduncle length: 6-7 cm Peduncle color: Green 138B Peduncle diameter: 1.5 mm Peduncle texture: Pubescent Peduncle strength: Medium Number per branch: About 8-9 inflorescences Duration of flowering: 5 weeks Seeds: Produced in small quantities, ovate, Greyed-brown 199A, length 1.5 mm, diameter 0.5 mm; texture: rough with ribs Fragrance: Faint chrysanthemum odor Color inflorescences Center of inflorescence: Immature stage: Yellow 13A; Mature stage: Yellow 13A Color of upper side of ray florets Yellow 12B (outer rows): Color of lower side of ray florets Yellow-orange 17B (outer rows): Color of upper side ray florets Yellow 10A (inner rows): Color of lower side ray-florets Yellow-orange 17B (inner rows): Tonality from distance: A garden mum with bronze blooms and a dark center Color of ray florets after aging Yellow 10A of the plant: Ray florets Number of types: 2 Type: Ligulate Rows: about 15 Texture: Upper and lower side smooth Number: outer rows: 140; inner rows: 30 Shape: outer rows: elliptic; inner rows: narrowly elliptic Apex: outer rows: dentate; inner rows: dentate Base: attenuate Cross-section: outer rows: flat; inner rows: concave Longitudinal axis: outer rows: straight; inner rows: straight Length of corolla tube: 3 mm Diameter corolla tube: 1 mm Ray floret margin: Entire Ray floret length (outer rows): 1.5-2 cm Ray-floret length (inner rows): 0.8-1 cm Ray-floret width (outer rows): 3 mm Ray floret width (inner rows): 1 mm Ratio length/width: Medium Disc florets Absent Receptacle Color: Yellow-green 145D Shape: Domed raiscd Height: 3-4 mm Diameter: 4 mm Reproductive Organs Androecium: Absent Pollen: Lacking Gynoecium: Present on ray florets Style color: Yellow-green 154C Style length: 4 mm Stigma color: Yellow 7A Stigma width: 1 mm Ovary: Enclosed in calyx Ovary color: Yellow-green 149D Plant Type: Bushy Growth habit: Spherical shape Growth rate: High Height: 25-30 cm Width: 40-45 cm Stem color: Greyed-brown 199A Stem strength: Not strong Stem brittleness: Brittle Stem anthocyanin coloration: absent Internode length: 0.5-2.5 cm Length of lateral branch: From top to bottom 20-22 cm Lateral branch color: Green 137 C Lateral branch, attachment: Weak Lateral branch diameter: 3 mm Lateral branch texture: pubescent with ribs Branching (average number Medium with 8 breaks after pinching of lateral branches): Natural season blooming date: October 2 (week 41) in Rijsenhout, the Netherlands. Root habits: Fine, freely branching Root color: White155D Rooting time: 6-8 days Formation rooted plants: 12-14 days Foliage Leaf glossiness: Upper side: very weak Lower side: absent Leaf color: Upper side: Green 136A Lower side: Green 137A. Color mid vein: Upper side: Yellow-green 147D Lower side: Yellow-green 148D Size: Small; length 2.5-5 cm, width 0.8-2 cm Quantity (number per about 25 lateral branches): Shape: Elliptic to obovate Texture upper side: Sparsely pubescent Texture under side: Pubescent Venation arrangement: Pinnate Shape of margin: Serrated Shape of base of sinus between Rounded lateral lobes: Margin of sinus between Diverging lateral lobes: Shape of base: Acute Apex: Mucronulate Petiole attitude: Moderately upwards Petiole length: 0.1-0.8 cm Petiole diameter: 3 mm Petiole color: Yellow-green 147D Stipules: present, small

TABLE 2 Differences with the comparison variety, when grown under identical conditions ‘Zanmumadore ‘Zanmumadore ‘Zanmumadore’ Yellow’ Orange’ Color upper side ray Red- Yellow 12B Greyed- floret-outer row purple 72C orange 163C Color upper side ray Red- Yellow 10A Greyed- floret color- purple 72A red 178A inner row 

I claim:
 1. A new and distinct chrysanthemum plant named ‘Zanmumadore Yellow’ as described and illustrated. 